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Finding the Fourth Proportional to 222,964, 307,690.80 and 122,361.76

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Solution

The fourth proportional to 222,964, 307,690.80 and 122,361.76 is: 168,859.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,964 : 307,690.80 = 122,361.76 : x
  2. Step 2: Convert to fraction form
    222,964/307,690.80 = 122,361.76/x
  3. Step 3: Cross multiply
    222,964x = 307,690.80 × 122,361.76
  4. Step 4: Simplify right side
    222,964x = 37,649,587,823.81
  5. Step 5: Solve for x
    x = 37,649,587,823.81/222,964
  6. Step 6: Final answer
    x = 168,859.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.